Internal-combustion engine.



E. C. LONG.

INTERNAL coMBusTloN MoToR.

APPLICATION FILED DEC. 16. 1911.

Patented Dec. Q8, 1915.

3 SHEETS-SHEET l.

E. C. LONG.

INTERNAL COMBUSTION MOTOR.

APPLICATION FILED DEC. 16, 191|. 1,165,522. Patented De.28,1915.

3 SHEETS-SHEET 2.

E. C. LONG.

INTERNAL coMusnoN Mom. APPLICATIN FILED DEC-15; 1911. P v d p 1,165,522. atente Dec. 2 L).

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JELMER C. LONG, OF `Hil.'.NIBAIL, MISSOURI, ASSIGNOR TO LONG SILENT MOTOR COMPANY, 0F HANN'IIIBAL, MISSOURI, A CORPORATION OF MISSOURI.

lIrrrnainar.-coatusfrioiv Moror..

Patented Dec. 28, 1915 .Application filed December 16, 1911. Serial No. 666,117.

To all whom t may concern.'

Be it known that 1, ELMER C. LONG, a citizen of the United States of America, residing at Hannibal, in the county ofMarion and State of Missouri, have invented certain new and useful Improvements in Internal-Combustion Motors, of which the following isa specification.

'This invention relates more especially to valve mechanisms for internal combustion motors, andto the adaptation of the principles of my invention to certain constructional features adapting the motor to be simply and durably Constructed and to be' eiiicient in operation.

One' of the objects of the present invention is to provide an improved construction, combination and arrangement of parts in a slow movement valve mechanism of the type shown, described, and i claimed in my copending application, Sl. No. 656,975 October 26', 1911. I

More specifically, an object is to provide an improved air cooling valve movement.

Another object is to provide an improved crank driven valve mechanism by means of which the admission iscaused to open later-.and close earlier than in the above mentioned application, and whereby the exhaust is caused to remainV open fora 'comparatively long period of travel of the main piston.

A further object is to provide a construction which makes it possible to employ a valve movement of shorter travel with a corresponding curtailment in the dimensions of the valve operating links.

An ancillary object toward the attainment of this end is to provide an improved adjustable .connection between the valve proper and the driving gear therefor.

With these and other objects in view, which will appear in the specification and be specifically pointed out in the appended claims, my invention contemplates the prin ciples of operation and the construction and arrangement of parts exemplified in the accompanying drawings showing an adaptation of my invention, and in which,

Figure 1 is a vertical section of an internal combustion motor, constructed in ac.

coi-dance with the principles of the present invention. Fig. 2 is a section on the line II-II, Fig. 1. Fig. 3 is a section on the line III- 111, Fig. 1. Fig. 4 is a section on 'when the exhaust valve is about 4. crank shaft 1, which may be common to anydesiredlnumber of engineunits, may be suitably journaled in the lower crank case housing 2, and, for each unit of the engine, is provided with a' crank 3 whose crank pin 4 is journaled in t-he end of a pitman 5 whose upper end is journaled upon a pin 6 carried the piston 7, said piston being reciprocaopen communication through passageways .9 and 10 with valve chambers- 11 and l2,

respectively.

The inlet valve chamber 11 is provided with an admission port 13 and the exhaust valve chamber l2 is provided with an ex-` haust port 1&1. Valves of peculiar construction, to be presently described, are reciprocably mounted' in these valve chambers, said chambers being provided with removable caps 15 and 16 which make the valves freely accessible from above.

For the sake of providing a valve movement which will be perfectly balanced at all times, and an improved construction for cooling said valves by air. I construct them in the manner illustrated best in Fig. 1, in which the hollow cylindrical ends 17 and 18 are connected by a contracted neck portion 19, the inner wall of the neck portion 19 being provided with a plurality of heat radiat- `ing rings 20 which provideva central air channel 2l, said rings being each provided .with a plurality of apertures 22 arranged 1n circular series'to provide air passages through the respective rings. In this manner, free radiation from the piston valve is provided in the interior thereof where the heat is taken up by yair which is pumped mounted in the cylinder 8 which is in Q through the piston valve during its reciprocation, suitable air intakes 33 being provided for the valve crank case housings.-

In order to provide a crank driven ad-V mission valve which opens relatively late and closes relatively early, and a crank driven exhaust valve which is open during a relatively long period of travel of the main piston and closes quickly, l preferably mount o n opposite sides ot' the main crank shaft 1, and at some distance thereabove, a pair of valve crank shafts 28 and 2i which are oiiset to one side of the axis of movement of said valves and rotate in the same direction as the main crank shaft. 1Within each motor unit, a crank pin 25 driven by the shaft 23 serves to drive a valve pitman 26 for the inlet valve, and a similar crank pin 27 serves to drive a pitman 9.8 for the exhaust valve. This arrangement of the valve crank shafts necessitates the provision of adjustable connections interposed between tlie respective valves and their crank shafts in order to regulate the times at which the inlet and exhaust valves open and close. For this purpose, preferably employ the device shown in Figs. 3, 4 and 5, in which is shown a cross head annulus 29 with its periphery threaded to the inner wall of the lower cylindrical portion 18 of the valve, so that said annulus may be adjusted at will to bring about an exact correlative relationship between the valves and the port openings, such relation being determined under actual running conditions.

ln order to provide simple and efficient means `for maintaining the annulus 29 in any position to which it may bev adjusted, lock bolts 30 are threaded lengthwise through off-set walls of said annulus, and are adapted to engage at their inner ends against a suitable shoulder formed around the inner piston wall to the annulus or cross head. The lock bolts 30 are, in turn, locked in position by jam nuts 31.

By an inspection of YFig. 1, it will be noted thatthe valve crank case housings are separate and distinct from the main crank shaft housing, each of said housings being made to conform closely to the path of travel of the rod ends therethrough, thus providing an eiiicient splash ,'system for lubricating the several parts.

Referring now to Fig. 2 of the drawings, I preferably arrange the cylinders in groups of two within an outerjacket or housing 32 which'provides the usual water cooling chamber, which in conjunction with the improved arrangement of the valve crank shafts above the path of travel of the main crank shaft, enables me to bringI the .valve housings in close juxtaposition to their 'i ,laatse -said cylinders and housings, and moreover,

enabling me to gain a maximum eiliciency in the consumption of the mixture.

By an inspection of Fig. l, together with the diagrammatic views shown in Figs. 6 and 7, it will be seen that when the exhaust opens, the main crank pin is approximately at the middle of its slow movement corresponding to the dead center position of the piston. In consequence, the main piston becomes accelerated on its upward travel during the initial'portion of the exhaust period sov that the scavenging of the cylinder is for the most vpart accomplished while the valve 4is wide open. Furthermore, by the time the exhaust valve is approximately closed, the piston has reached its upper dead centervv slow movement, and a small initial downward movement of the piston prior to the opening of the admission valve creates a partial vacuum and produces a sharp rapid admission.

lWhat l claim is:

1. A tubular valve open at both ends and provided with cylinder bearing portions adjacent its ends, a contracted neck portion connecting said cylinder bearing portions, said neck portion having a series of circularly formed radiating projections on its inner wall extending the entire length thereof, said radiating portions being provided with apertures.

2. A tubular valve open at both ends and provided with cylinder bearing portions ad jacent its ends, a cont lacted neck portion connecting said cylinder bearing portions having a series of horizontally arranged radiating flanges mounted on the inner wall thereof, and an adjusting annulus carrying a wrist pin mounted onone of said cylindrical bearing ends.

3. In an internal combustion motor, a closed valve housing, a hollow valve reciprocatable therein and open at both ends, cylinder bearing portions formed on said valve adjacent the ends thereof, circularlv formed heat radiating projections locatedadjacent the central portion of the inner wall of said valve, said portions being pro vided with apertures for the passage ot' air, and an. adjusting annulus'carrying a wrist pin turnably mounted on one of said cylindrical bearings, said projections adapted to a'gitate the atmosphere contained-insaid housing.

ELMER C. LONG. In the presence of- T. MORENO, Gro. WV. CARNEY.

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